Zero-setting mechanism.



F. S. BALDWIN. ZERO SETTING MECHANISM.

APPLICATION FILED SEPT. 24. m4.

1 ,275, 1 1 9. Patented Aug. 6, 1918.

3 SHEETS-SHEET I.

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Frank (5. 75a] dwin i i Memes (fiiwwm. m

' F. S. BALDWIN.

ZERO SETTING MECHANISM,

APPLICATION FILED SEPT.24, I914.

Patented Aug. 6, 1918.

3 SHEETSSHEET 2.

wi bntooco F. S. BALDWIN.

ZERO SETTING MECHANISM. APPLICATION FILED SEPT. 24. mm.

1,275, 1 1 9. V Patented Aug. 6, 1918.

3 SHEETSSHEET 3- 1mm: 8. BALDWIN, or new I To all whom it may concern:

Be it known that I, FRANK S. BALDWIN, a citizen of the United States,resident of New York, in the county of New York and State of New York,have made a certain newand useful Invention in Zero-Setting Mechanism;and I declare the following to .be a

- numeral whee full, clear, and exact description of the same, such aswill enable others skilled in the art to which it appertains to make anduse the invention, reference being had to the accompanying drawings, andto letters or figures of reference marked thereon, which form a part ofthis specification. v

Figure 1 is a plan view of the invention as apphed. r

Fig. 2 is a section on the line 2-2, Fig. 1, showlng the radialprojectlon upon the rock shaft as rocked to each side in dotted lines.

Fig. 3 is a section on the line 33, F 1.

Fig. 4 is a section on the l1ne'4,4, Fig. 1.

Fig. 5 is a detail section vlew of theclutch connection of the gears ofthe operating de vice.

Fig. 6 is a detail transverse section taken through the o erating shaftand one of the Fshafts, showing the driving connection between theseshafts, and the locking spring, the numeral wheel shaft being locked.

Fig. 7 is a similar companion section v1ew taken through the operatingshaft and the other unlocked numeral wheel shaft.

Fig. 8 is a detail transverse section of the rock shaft and the numeralwheel shafts, the rock shaft being rocked to one side to bring theradial projections into engagement with the gears of one of said shafts.

Flg. 9 is a detail transverse section of the rock shaft and the numeralwheel shafts, showing the means for rocking the shaft.

The invention has relation to zero-setting mechanism for calculating andother ma-' chines, havin for its object the provision of simple and ecient means for setting back to zero two series of registering ornumeral wheels by movement of an operating device or handle first in onedirection and then inanother or opposite direction, said means beingcapable of setting back to 'zero either series of wheels independentlyof the other series by movement of the handle in one direction.

The invention consists in the novel con- YORK, N. Y., MACHINE COMPANY,OF NEW YORK, N.

r ZEBO-SETT1NG MECHANISM.

Specification of Letters l 'atent. Application filed September 84, 1814.Serial No. 838,810.

ing

assmnon TO monaon cucum'rme Y., A conromrron or mew YORK.

Patented Aug. 6, 1918 {V struction and combinations of parts, as hereinafter set forth.

In the accompanying drawings illu strat-= I an endwise-shiftablecarriage, pivoted in rear at 3, said carriage having mounted theinvention, the numeral 2,"indicates thereu on a series of numeral wheels13, and a para lel series of numeral wheels 85, as in the type ofmachine of the Patent Number 1,080,245, dated December 2, 1913, to whichthis invention is shown as applied in substitution for the zero-settingmeans of said machine.

Between and parallel to bar 4, having a series of radial projections v5,5, spaced apart from each other'and northe two series ofnumeral wheels13 and 85 is located a rod or:

to bring the proj ections first within the path of movement of I oneseries of wheels as 13, and as the bar'is oppositely rocked,-out of thepath of move, ment of the pins of said wheels and. within the path ofmovement of the pins of the other series of wheels,'as 85. a

An operating device or handle 8 is carried by a rotary shaft 9, saidshaft havin driving connection with the shafts 60 am? 84,0f the numeralwheels andbeing adapted upon to turn the other series of wheels, bysuitable means, consisting preferably of two gears 10 movement of thehandle in one direction to and 11, upon the shaft 9, said gears drivingears 12 and 14 of the shafts 60 and 84'an' having respectivelyoppositely acting clutch connections with the shaft 9, includingspring-pressed and shoulders 1 and 18 of the wheel hubs, said shouldershaving inclined approaches 19 and 20. u

The shafts 60 and 84 are normall against being turned, and the loc isreleased previous to turning of the shafts and of the wheels thereupon,by means consisting usually of springs 19" and 20 of the carriage saidsprings having pins 19" and 20" engaging seats 22 and 23 of the gears12'and 14, alateral tooth or projection 24 or 24' having during thefirst the gear 10 or 11,

- part of the rotary movement of the gear, eliins 15 and 16 of the shaftlocked I gageme'nt with the spring 1 9 or 20 to the springto one sideand release the p n" thereof from its seat, the gears 10 and 11 havingmutilated or smooth portions 11' whichwill not act upon the cars 12 a an14 to turn the same durin the rst part for the purpose state said meansconsist- I ing preferably of a cam 25, upon'shaft 60, and a cam 26, uponshaft 84, the cams having each .a notch 26', wherein fit normally pins27,28 located at opposite'ends of cross arm 29, fast upon bar 4;. vshaft 60 or 84 starts to turn, the cam upon.

As the the shaft will turn therewith, the beveled wall 30 of 31 of therespective notch, acting upon the pin engaging the notch to roc ,thecross arm and the bar, the pin at the other end of the cross arm enterininto the notch'of the other cam, an" the pm with the shafts, an wheelsstrike the'radial projections of the Y 5. l

farther moved from the notch, riding upon the circumferential surface ofthe cam until a complete rotation of the shaft has been effected, whenthe pin will fall into the notch again and the cross armand bar 4 assumeor be rocked to normal position, under the influence of spring 32,carried by the bar 4:, andbearing against pins 33-01? the carriage.

lnpperation, the handle is moved first one complete rotatlon in onedirection and then one complete rotation in the opposite direction, toset back both series of numeral" wheels to zero, or the handle is movedone complete rotation in either direction to set back either series ofwheels to zero. In this operation, the shafts and 84, or either of'them, are turned,v the numeral wheels thereupon turning throughfrictional engagement as the pins upon these rock bar, movement of thewheels is arrested, the pins being so arranged upon the wheels that whenthe movement of the l jwheels is so arrested, the wheels will be inposition toexpose the zero characters thereof through the carriageopenings.

' What I claim is:

1. In zero-setting mechanism, a series of numeral wheels having eachastop, a second series ofnumeral wheels having each a stop,

' ing 0 utch connection with the wheels of each series, theclutchesrelating to the two series an 0' rating shaft having separatedrivacting oppositely, and. a movable member having connection withtheoperating shaft and moved thereby into the paths of the stops of thewheels of either series.

2. In zero-setting mechanism, parallel driven shafts, a series ofnumeral wheels upon each shaft and having. each a stop, means ror'turmngthe respective shafts and leased 'erating' shaft having separate drivingshaft havin v .the wheels thereon, including an operating shaft meanshaving connection with and re- A shaft'for normally by the'operatinlockin said driven s afts against being turne and a movable memberhaving connection with the operatin shaft and moved thereby into thepaths 0 the stops of the wheels of either of the parallel shafts.

3. In zero-setting mechanism, parallel driven shafts, a series ofnumeral wheels vupon each shaft having each a stop, an operating shafthaving separate driving connection, Including a clutch, with each riven.shaft, the clutchesof the two shafts acting oppositely, and a movablemember havin connection with the operatin shaft moved thereby into thepaths 0 the stops of a the wheels of either driven shaft.

4. In zero-setting mechanism, parallel driven shafts, a series ofnumeral wheels upon each shaft having each a stop, an op-,

connection, including a clutch, with each riven shaft, the clutches ofthe two shafts actin oppositely, means having connection with andreleased by the operatin shaft for normally locking the driven sha sagainst turning, and a movable member having connection with theoperating shaft and moved thereby into the paths of the stops of thewheels of either driven "shaft.

5. In zero-setting mechanism, arallel driven shafts having each at oneend a cam provided with a notch, a series of numeral wheels upon eachshaft having each a'stop, means for turning the res ectlve shafts and-the wheels thereon, inclu ing an operating shaft, a rock shaft having across-arm provided with end pins normally engaging the notches of bothcams, each notch having a cam wall engaging one of said end pins to ckthe cross-arm and the shaft upon turnmg of one of the parallel shafts,each end pin riding upon the circumferential surface of the respectivecam during-the turning, said rock shaft having means for engagement withthe stops of each series of wheels in order. 6. In zero-settingmechanism, parallel shafts, a series of numeral wheels u on each pinsextending therefrom, an operating s aft, a rock shaft hav'ng projectionss aced apart from each 0 her and adapted or engagement with the pins ofeach series of numeral wheels in order, an operatin device, and meanswhereb when said device is moved in one directmnone.

7. In zero-setting mechanism, parallel shafts having each a gear wheeland a notched cam, a series of numeral wheels upon each shaft havingpins extending there-- from, an operating s aft havin mutilated gearwheels for engagement wit the gears of the. parallel shafts, saidoperating shaft having oppositely acting clutch connections with thegear wheels thereon, springs upon the carriage having locking engagementwith the gears of the parallel shafts, means upon each mutilated gear torelease the respective spring upon turning of the gear, a rock shafthaving a series of radial projecto efi'ect the rocking upon turning ofeach 20" parallel shaft in order.

In testimon whereof I afiix my signature, in presence 0 two witnesses.

FRANK S. BALDWIN.

Witnesses:

H. LARSEN, P. F. HARNE'I'I.

acedapart from each other and 15 arallel shaft re-

